Add a sip header from module

Asterisk Asterisk General
1

Hi, please let me know if I’m posting this in the wrong place.

I am trying to develop a module that will contain functions that can be called from within the a dial plan. One of the things I want to do within one of my functions is add/modify the diversion sip header and then make a call. I can make a call using ast_call() in channel.h but I can’t seem to figure out how to add the sip header. I would have thought the function to do this would be in channel.h.

I realize that this is easy to do within the dial plan itself using SipAddHeader() but running doing this within the dial plan isn’t feasible for the deployment I am setting up. I apologize if this is a newbie question, I’m fairly new to asterisk development and module development in particular.

2

This is a developer question being asked on an end user discussion forum. Non developer support questions should go on a Support forum and developer questions should go on the developer mailing list or IRC channel.

You will need to see if chan_sip.c exports the add header low level function. If not you will have to use the internal set variable API to call the existing function in set mode.

3

Hi,
you could add sip header from add_supported_header() function in chan_sip.c.
for example:
res = add_header(req, “Supported”, “replaces, timer”);
or:
res = add_header(req, “Supported”, “replaces”);
with Regards.Mojtaba

4

I think that is declared static, so not available to other modules.

5

What is your minds? Excuse me but i do’nt understand your minds in your reply.
May you explain more details? please

6

yes, that is declared statis function in chan_sip.c file, so not available to other modules.
the only way is that call it’s functions in new module from chan_sip.c file, but it may be critical